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journal_csv.py
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journal_csv.py
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from portality import models
from portality.background import BackgroundTask, BackgroundApi
from portality.bll.doaj import DOAJ
from portality.core import app
from portality.tasks.helpers import background_helper
from portality.tasks.redis_huey import main_queue
class JournalCSVBackgroundTask(BackgroundTask):
__action__ = "journal_csv"
def run(self):
"""
Execute the task as specified by the background_job
:return:
"""
job = self.background_job
journalService = DOAJ.journalService()
url, action_register = journalService.csv()
for ar in action_register:
job.add_audit_message(ar)
job.add_audit_message("CSV generated; will be served from {y}".format(y=url))
def cleanup(self):
"""
Cleanup after a successful OR failed run of the task
:return:
"""
pass
@classmethod
def prepare(cls, username, **kwargs):
"""
Take an arbitrary set of keyword arguments and return an instance of a BackgroundJob,
or fail with a suitable exception
:param kwargs: arbitrary keyword arguments pertaining to this task type
:return: a BackgroundJob instance representing this task
"""
# prepare a job record
job = background_helper.create_job(username, cls.__action__, queue_id=huey_helper.queue_id)
return job
@classmethod
def submit(cls, background_job):
"""
Submit the specified BackgroundJob to the background queue
:param background_job: the BackgroundJob instance
:return:
"""
background_job.save()
journal_csv.schedule(args=(background_job.id,), delay=10)
huey_helper = JournalCSVBackgroundTask.create_huey_helper(main_queue)
@huey_helper.register_schedule
def scheduled_journal_csv():
user = app.config.get("SYSTEM_USERNAME")
job = JournalCSVBackgroundTask.prepare(user)
JournalCSVBackgroundTask.submit(job)
@huey_helper.register_execute(is_load_config=False)
def journal_csv(job_id):
job = models.BackgroundJob.pull(job_id)
task = JournalCSVBackgroundTask(job)
BackgroundApi.execute(task)